.bottom-btn{
    position: fixed;
    width: 100%;
    // width: calc(100vw - 50rpx);
    // left: 50%;
    // transform: translateX(-50%);
    bottom: env(safe-area-inset-bottom);
    margin-bottom: 20rpx;
}

.ff-flex-box{
    display: flex;

}
.ff-flex-box .at-button{
    flex: 1;
    margin: 0 20rpx;
}